Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white).
Jon Gosselin opened up to Us Weekly about working at TGI Fridays in Lancaster, Pennsylvania, explaining that he took the job because he has a passion for cooking and charity.
[1] Robert Hofler, The Man Who Invented Rock Hudson (2005), page 189. Other homosexual actors of the period also found reasons to avoid the go-getter agent [Henry Willson]. 'I often think what would have happened if I'd signed with him, said Roddy McDowall [to the author]', who visible shuddered at the thought..